Rotary transposition welding fixture for lower swing arm

Abstract

The utility model discloses a lower swing arm rotation transposition welding fixture which comprises a working table, a rotating disc, a rotating assembly, a clamping assembly, a limiting base and a lining positioning assembly, the rotating disc is rotationally connected to the center of the top end face of the working table through a rotating shaft, and the rotating assembly is arranged on one side of the top end face of the working table and used for driving the rotating disc to rotate. A limiting base used for positioning the lower swing arm is arranged in the center of the top end face of the rotating disc, clamping assemblies fixed to the end face of the rotating disc and used for fixing the lower swing arm are arranged on the two sides of the limiting base, and the lining positioning assembly is arranged on the end face of the rotating disc corresponding to the welding position of the lower swing arm. After single-side welding of the lower swing arm is completed, the motor drives the rotating disc to rotate through the gear and the gear ring, the lower swing arm fixed to the end face of the rotating disc rotates along with the rotating disc, and therefore the welding position is rotated and changed; the rotating assembly is arranged to drive the lower swing arm assembly to rotate and change positions, a welding gun does not need to be carried to change the welding posture many times in the welding process, and therefore welding efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of lower arm welding jigs, in particular to a lower arm rotary displacement welding jig. Background Art

[0002] The lower arm, commonly known as the lower suspension, is located between the vehicle body and the steering wheel. Its main function is to transmit torque, support the steering knuckle arm and relieve lateral and longitudinal loads. The existing lower arm assembly is welded by two layers of stamping iron parts, and a bushing bracket is also welded at the connection position, and a jig is used for fixing during welding; however, the existing jigs are all arranged on the welding table, and the entire jig cannot change its position, resulting in welding dead corners. Therefore, during the welding process, the posture of the welding torch needs to be changed multiple times to weld the dead corner parts, and the multiple posture changes will reduce the welding efficiency. Therefore, a lower arm rotary displacement welding jig is designed to solve the above problems. Content of the Utility Model

[0003] Aiming at the deficiencies of the existing lower arm welding jig, the purpose of the utility model is to provide a lower arm rotary displacement welding jig, which has the advantages of driving the swing arm to rotate and displace, improving welding efficiency, etc.

[0004] To achieve the above object, a technical solution adopted by the utility model is: a lower arm rotary displacement welding jig, including a workbench, a rotating disk, a rotating assembly, a clamping assembly, a limiting base and a bushing positioning assembly. The rotating disk is rotatably connected to the center of the top end face of the workbench through a rotating shaft. The rotating assembly is arranged on one side of the top end face of the workbench to drive the rotating disk to rotate. A limiting base for positioning the lower arm is arranged at the center of the top end face of the rotating disk. Clamping assemblies for fixing the lower arm are arranged on both sides of the limiting base and fixed to the end face of the rotating disk. The bushing positioning assembly is arranged on the end face of the rotating disk corresponding to the welding position of the lower arm.

[0005] Preferably, the rotating assembly includes a motor, a gear and a gear ring. The gear ring is sleeved on the outer edge of the rotating disk. The gear meshes with the gear ring, and the gear is fixedly connected to the output shaft of the motor. The motor is fixedly connected to the end face of the workbench. After one side of the lower arm is welded, the motor drives the rotating disk to rotate through the gear and the gear ring, so that the lower arm fixed to the end face of the rotating disk rotates accordingly, thereby rotating and displacing the welding position.

[0006] Preferably, the clamping assembly includes a hinged rod, a clamping cylinder, an elastic cord, and an L-shaped positioning arm. The L-shaped positioning arm has a short limb and a long limb that are perpendicular to each other. The hinged rod is fixedly connected to the end face of the rotating disk. The middle of the long limb of the L-shaped positioning arm is hinged to the top of the hinged rod. The clamping cylinder is arranged on the end face of the rotating disk corresponding to one side of the hinged rod. The telescopic end of the clamping cylinder abuts against the outer end of the long limb of the L-shaped positioning arm. One end of the elastic cord is fixedly connected to the end face of the rotating disk, and the other end of the elastic cord is fixedly connected to the outer end of the long limb of the L-shaped positioning arm. The elastic cord forces the long limb of the L-shaped positioning arm to fit against the telescopic end of the clamping cylinder. The short limb of the L-shaped positioning arm is arranged corresponding to the edge of the limit base. When the clamping cylinder extends, it drives the L-shaped positioning arm to rotate, and the short limb of the L-shaped positioning arm clamps the lower swing arm placed on the limit base. While the L-shaped positioning arm rotates, the elastic cord is stretched. When the clamping cylinder retracts, the elastic cord contracts and forces the L-shaped positioning arm to rotate, and the L-shaped positioning arm no longer clamps the lower swing arm under the drive of the elastic cord.

[0007] Preferably, the end face of the limit base has a cavity that fits the outer contour of the lower swing arm, and one side of the end face of the limit base also has a column for inserting the ball head mounting hole position of the lower swing arm.

[0008] Preferably, the bushing positioning assembly includes a positioning post, a abutting flange, a limiting post, and a positioning cylinder. The positioning cylinder is arranged on the end face of the rotating disk corresponding to the welding positions of the bushings on both sides of the lower swing arm. The telescopic end of the positioning cylinder is fixedly connected with an abutting flange. The outer end of the abutting flange is fixedly connected with a positioning post for sleeving the bushing. The limiting post is arranged on the end face of the rotating disk corresponding to the opposite position of the positioning cylinder. The positioning cylinder is used to drive the abutting flange and the bushing sleeved on the positioning post to abut against one side of the limiting post.

[0009] Further preferably, the cylinder is used to drive the positioning post and the abutting flange to position the bushing to the welding position.

[0010] The beneficial effects of the present utility model are as follows: 1. After one-side welding of the lower swing arm is completed, the motor drives the rotating disk to rotate through the gear and the gear ring, so that the lower swing arm fixed to the end face of the rotating disk rotates accordingly, thereby rotating and changing the welding position, so as to reduce the number of times the welding torch changes its posture. 2. By setting the rotating assembly to drive the clamped lower swing arm assembly to rotate and change positions, it is not necessary to carry the welding torch to change the welding posture multiple times during the welding process, thereby achieving the purpose of improving the welding efficiency. Description of the Drawings

[0011] Figure 1 It is a top view of the clamping state of the lower swing arm of the present utility model.

[0012] Figure 2 It is a top view of the unclamped state of the present utility model.

[0013] Figure 3 For the present utility modelFigure 1 Partial enlarged view of Region I.

[0014] Figure 4 This utility model Figure 2 Partial enlarged view of Region II.

[0015] Figure 5 This utility model Figure 4 Cross-sectional structure view in the A-A direction of this utility model. Specific implementation mode

[0016] The following elaborates on the preferred embodiments of this utility model in conjunction with the attached drawings, so that the advantages and features of this utility model can be more easily understood by those skilled in the art, thereby making the protection scope of this utility model more clearly defined.

[0017] It should be noted that in the description of this utility model, the terms indicating the direction or positional relationship such as "upper", "lower", "left", "right", "inner", "outer", etc. are based on the direction or positional relationship shown in the attached drawings. This is only for convenience of description and does not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation to this utility model.

[0018] In addition, it should also be noted that in the description of this utility model, unless otherwise clearly specified and limited, the terms "installation", "connection", "connection", "provided with", "set" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific situations.

[0019] Please refer to Figures 1 to 5 , the embodiments of this utility model include:

[0020] A swing arm rotation and displacement welding fixture, including a workbench 1, a rotating disk 2, a rotating assembly 3, a clamping assembly 4, a limiting base 5, and a bushing positioning assembly 6. The rotating disk 2 is rotationally connected to the center of the top end face of the workbench 1 through a rotating shaft. The rotating assembly 3 is arranged on one side of the top end face of the workbench 1 to drive the rotating disk 2 to rotate. A limiting base 5 for positioning the swing arm is provided at the center of the top end face of the rotating disk 2. Clamping assemblies 4 for fixing the swing arm are provided on both sides of the limiting base 5 and are fixed to the end face of the rotating disk 2. The bushing positioning assembly 6 is arranged on the end face of the rotating disk 2 corresponding to the welding position of the swing arm;

[0021] Preferably, the rotating assembly 3 includes a motor 31, a gear 32 and a gear ring 33. The gear ring 33 is sleeved on the outer edge of the rotating disk 2. The gear 32 meshes with the gear ring 33. The gear 32 is fixedly connected to the output shaft of the motor 31. The motor 31 is fixedly connected to the end face of the workbench 1. After the single-side welding of the lower swing arm is completed, the motor 31 drives the rotating disk 2 to rotate through the gear 32 and the gear ring 33, so that the lower swing arm fixed on the end face of the rotating disk 2 follows the rotation, thereby rotating and displacing the welding position.

[0022] Preferably, the clamping assembly 4 includes a hinge rod 41, a clamping cylinder 42, an elastic cord 43 and an L-shaped positioning arm 44. The L-shaped positioning arm 44 has a short limb and a long limb that are perpendicular to each other. The hinge rod 41 is fixedly connected to the end face of the rotating disk 2. The middle of the long limb of the L-shaped positioning arm 44 is hinged to the top of the hinge rod 41. The clamping cylinder 42 is arranged on the end face of the rotating disk 2 corresponding to one side of the hinge rod 41. The telescopic end of the clamping cylinder 42 abuts against the outer end of the long limb of the L-shaped positioning arm 44. One end of the elastic cord 43 is fixedly connected to the end face of the rotating disk 2, and the other end of the elastic cord 43 is fixedly connected to the outer end of the long limb of the L-shaped positioning arm 44. The elastic cord 43 forces the long limb of the L-shaped positioning arm 44 to fit with the telescopic end of the clamping cylinder 42. The short limb of the L-shaped positioning arm 44 is arranged corresponding to the edge of the limit base 5. When the clamping cylinder 42 extends, it drives the L-shaped positioning arm 44 to rotate. The short limb of the L-shaped positioning arm 44 clamps the lower swing arm placed on the limit base 5, and the elastic cord 43 is stretched while the L-shaped positioning arm 44 rotates. When the clamping cylinder 42 retracts, the elastic cord 43 contracts and forces the L-shaped positioning arm 44 to rotate. The L-shaped positioning arm 44 no longer clamps the lower swing arm under the drive of the elastic cord 43.

[0023] Preferably, the limit base 5 has a cavity on its end face that fits the outer contour of the lower swing arm. One side of the end face of the limit base 5 also has a column 51 for inserting into the ball head mounting hole position of the lower swing arm.

[0024] Preferably, the bushing positioning assembly 6 includes a positioning post 61, a abutting flange 62, a limit post 63 and a positioning cylinder 64. The positioning cylinder 64 is arranged on the end face of the rotating disk 2 corresponding to the welding positions of the bushings on both sides of the lower swing arm. The telescopic end of the positioning cylinder 64 is fixedly connected with an abutting flange 62. The outer end of the abutting flange 62 is fixedly connected with a positioning post 61 for sleeving the bushing. The limit post 63 is arranged on the end face of the rotating disk 2 corresponding to the opposite position of the positioning cylinder 64. The positioning cylinder 64 is used to drive the abutting flange 62 and the bushing sleeved on the positioning post 61 to abut against one side of the limit post 63.

[0025] More preferably, the cylinder is used to drive the positioning post 61 and the abutting flange 62 to position the bushing to the welding position.

[0026] With the above settings, in the actual working process, its specific working principle is as follows:

[0027] Loading: First, sleeved the bushing on the outer edge of the positioning post 61. Then, place the outer stamping part of the lower control arm on the limiting base 5, and place the inner stamping part of the lower control arm inside the outer stamping part. After placement, ensure that the positioning post 61 on the end face of the limiting base 5 is inserted into the ball joint mounting hole position of the lower control arm, thus completing the loading.

[0028] Clamping: Start the clamping cylinder 42 to extend. When the clamping cylinder 42 extends, it drives the L-shaped positioning arm 44 to rotate. The short limb of the L-shaped positioning arm 44 clamps the lower control arm placed on the limiting base 5, and the elastic cord 43 is stretched while the L-shaped positioning arm 44 rotates.

[0029] Welding position changing: After welding on one side of the lower control arm is completed, start the motor 31. The motor 31 drives the rotating disk 2 to rotate through the gear 32 and the gear ring 33, so that the lower control arm assembly fixed on the end face of the rotating disk 2 rotates accordingly, thereby changing the welding position by rotation.

[0030] Unloading: Start the clamping cylinder 42 to retract. When the clamping cylinder 42 retracts, the elastic cord 43 contracts and forces the L-shaped positioning arm 44 to rotate. The L-shaped positioning arm 44 no longer clamps the lower control arm under the drive of the elastic cord 43.

[0031] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. All equivalent structural or equivalent process transformations made by using the content of the specification and drawings of the present invention, or directly or indirectly applied to other related technical fields, are similarly included in the patent protection scope of the present invention.

Claims

1. A lower swing arm rotation transposition welding fixture, characterized in that: It includes a workbench, a rotating disk, a rotating component, a clamping component, a limit base and a bushing positioning component. The rotating disk is rotatably connected to the center of the top end surface of the workbench through a rotating shaft. The rotating component is arranged on one side of the top end surface of the workbench to drive the rotating disk to rotate. A limit base for positioning the lower swing arm is provided at the center of the top end surface of the rotating disk. Clamping components fixed to the end surface of the rotating disk for fixing the lower swing arm are provided on both sides of the limit base. The bushing positioning assembly is arranged on the end surface of the rotating disk corresponding to the welding position of the lower swing arm.

2. The lower swing arm rotation transposition welding fixture according to claim 1 is characterized in that: The rotating assembly includes a motor, a gear and a gear ring. The gear ring is sleeved on the outer edge of the rotating disk. The gear and the gear ring are meshed. The gear and the motor output shaft are fixedly connected. The motor is fixedly connected to the end surface of the workbench.

3. The lower swing arm rotation transposition welding fixture according to claim 1 is characterized in that: The clamping assembly includes an articulated rod, a clamping cylinder, an elastic rope and an L-shaped positioning arm, the L-shaped positioning arm having a short limb and a long limb that are perpendicular to each other, the articulated rod is fixedly connected to the end face of a rotating disk, the middle part of the long limb of the L-shaped positioning arm is hinged to the top of the articulated rod, the clamping cylinder is arranged on the end face of the rotating disk corresponding to one side of the articulated rod, the telescopic end of the clamping cylinder abuts against the outer end of the long limb of the L-shaped positioning arm, one end of the elastic rope is fixedly connected to the end face of the rotating disk, the other end of the elastic rope is fixedly connected to the outer end of the long limb of the L-shaped positioning arm, the elastic rope forces the long limb of the L-shaped positioning arm to fit with the telescopic end of the clamping cylinder, and the short limb of the L-shaped positioning arm is arranged corresponding to the edge of the limiting base.

4. The lower swing arm rotation transposition welding fixture according to claim 1, characterized in that: The end surface of the limiting base has a cavity that fits the outer contour of the lower swing arm, and one side of the end surface of the limiting base also has a column for inserting into the installation hole of the ball head of the lower swing arm.

5. The lower swing arm rotation transposition welding fixture according to claim 1, characterized in that: The bushing positioning assembly includes a positioning column, an abutment flange, a limit column and a positioning cylinder. The positioning cylinder is arranged on the end face of the rotating disk corresponding to the welding positions of the bushings on both sides of the lower swing arm. The telescopic end of the positioning cylinder is fixedly connected with an abutment flange. The outer end of the abutment flange is fixedly connected with a positioning column for sleeve-mounted bushing. The limit column is arranged on the end face of the rotating disk corresponding to the opposite position of the positioning cylinder. The positioning cylinder is used to drive the abutment flange and the bushing sleeved on the positioning column to abut against one side of the limit column.

6. The lower swing arm rotation transposition welding fixture according to claim 5, characterized in that: The cylinder is used to drive the positioning column and the abutment flange to position the bushing to the welding position.

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